I recently had to return a 15inch PowerBook I had been using to my sister who returned from a year-long trip abroad. I've been using it mainly to video edit on Final Cut Express, and synch itunes with the iPod, in addition to word processing and email/internet. The problem with Final Cut was that it took forever to render videos. I once used a PowerMac G4 Dual 1.25Ghz, and the rendering was much much faster. Right now, I can't afford a PowerMac G5, but needing something to replace my sister's PowerBook, should I get the new PowerBook G4s or should I get something like a 20inch iMac G5? . Thanks!